EP0789830A1 - Sliding grating for a burned-material cooling unit, and grating plate for such a grating - Google Patents

Sliding grating for a burned-material cooling unit, and grating plate for such a grating

Info

Publication number
EP0789830A1
EP0789830A1 EP95936572A EP95936572A EP0789830A1 EP 0789830 A1 EP0789830 A1 EP 0789830A1 EP 95936572 A EP95936572 A EP 95936572A EP 95936572 A EP95936572 A EP 95936572A EP 0789830 A1 EP0789830 A1 EP 0789830A1
Authority
EP
European Patent Office
Prior art keywords
sliding
grate
plate
cooling air
cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95936572A
Other languages
German (de)
French (fr)
Other versions
EP0789830B1 (en
Inventor
Theo Fehsenmayr
Reiner FRÜHLING
Frank Heinrich
Hartmut Meyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Claudius Peters AG
Original Assignee
Babcock Materials Handling AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Babcock Materials Handling AG filed Critical Babcock Materials Handling AG
Publication of EP0789830A1 publication Critical patent/EP0789830A1/en
Application granted granted Critical
Publication of EP0789830B1 publication Critical patent/EP0789830B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F27D15/0206—Cooling with means to convey the charge
    • F27D15/0213—Cooling with means to convey the charge comprising a cooling grate
    • F27D15/022—Cooling with means to convey the charge comprising a cooling grate grate plates

Definitions

  • Known sliding grates such as those used for cooling cement clinker and other pourable firing material, consist of a plurality of rows of grate plates which run transversely to the longitudinal and feed directions of the cooler and which alternate in a fixed manner and are moved back and forth in the conveying direction are arranged, the grate plates arranged one behind the other overlapping one another in a scale-like manner.
  • the material bed to be cooled moves over the top of the plates and has a wearing effect. It is known (EP-C 337383; EP-A 537523; US-A 5174747) to provide recesses in the top of the plate in the receiving area, over which the bed slides, in which good particles are held and in which cooling air outlet openings open.
  • This arrangement has the advantage that the cooled material held in the recesses protects the area of the grate plate underneath from the thermal and wear-and-tear effect of the material bed sliding over it and that the cooling air is well distributed by the material located in the recesses .
  • the front panel section is particularly prone to wear, it is essentially equipped over its entire width with one or more such recesses.
  • the rear section is less thermally stressed because it is covered to a periodically changing extent by the grate plate arranged behind it. So that this rear plate can slide over it without a substantial distance, the surface of this rear section is generally made more or less smooth and parallel to the direction of the relative movement. It is referred to below as the sliding surface.
  • the known plates equipped in the front section with recesses on the top side have a cooling air supply rough, which is connected to the cooling air outlet openings and has a cooling air supply opening which is connected to the associated grate plate carrier.
  • This is a hollow beam assigned to each row, the cavity of which is used for supplying cooling air and on which the grate plates are mounted with their rear area projecting forward.
  • the recesses in the goods receiving area are designed so that they can hold part of the goods all the better, with steep boundary surfaces and as deep as possible in comparison with the available plate height.
  • the cross section of the cooling air supply space could indeed be increased by choosing a larger plate height; however, this increases the material requirement that determines the costs.
  • the higher panels then no longer fit the previously used, lower panels.
  • the invention is therefore based on the object of a sliding grate of the type described, as described in the generic term of Claim 1 is specified, or to improve an associated grate plate with regard to the air supply to the cooling air outlet openings without great expense.
  • This solution consists in that the depression of the material receiving surface at the back is less deep than at the front, so that the cooling air supply space has a correspondingly decreasing cross-sectional size from the back to the front.
  • the lowering of the receiving area takes place gradually from the back to the front.
  • the cooling air outlet openings or parts of the cooling air outlet slots located further ahead are better supplied with cooling air, and the front part of the plate which is particularly exposed to the action of heat from the material bed is better cooled.
  • the gradual or gradual lowering of the goods receiving surface to form the upper-side depression in the grate plate does not endanger the effect which the depression is intended to achieve. It is true that the thickness of the quantity of material held in the rear, flatter region of the depression is less than in the front region, so that its cooling effect is less, whereby there may also be a greater exchange of the material held. However, the cooling requirement or the heat protection requirement of the plate is also lower in the rear region of the depression. On the one hand, this is the fact that the rear region of the depression has more favorable heat dissipation conditions to the section of the plate which is located further back and is more protected. On the other hand, the front area of the front portion of the grate plate, close to the forehead, of the grate plate is more exposed to the effects of wear and heat from the material bed.
  • the reference surface to which the lowering of the material receiving surface relates, is formed by the imaginary plane which connects the sliding surface of the rear grate plate section with the upper edge of the front ledge delimiting the grate plate at the front.
  • the recess of the material receiving surface can hold cool material sufficiently despite its flatter design in the rear area, it is expediently provided with a device which prevents the material movement in the longitudinal direction relative to the grate plate and which is, for example, one or more transverse ribs.
  • the cooling air outlet openings are expediently formed by longitudinal slots in the cover wall forming the base of the depression, which are covered by cover strips, including their edges. As a result, the cooling air outlet openings open out in an approximately horizontal direction, which reduces the possibility of disadvantageous material diarrhea.
  • the cover strips are arranged in the longitudinal direction without stretching relative to the cover wall, so that the width of the outlet slots cannot be reduced by thermal expansion.
  • the cover strips are expediently connected to the part forming the sliding surface and possibly also to the front strip, preferably in one piece, while the cover wall forms a separate part, which is expediently fixed and, if necessary, to the bottom wall delimiting the cooling air supply space on the underside. is connected in one piece.
  • a contact surface is provided near the front end of the cover strips between the upper plate part comprising the cover strips and the lower plate part comprising the cover wall, the direction of this surface being dependent on the direction of the surfaces delimiting the cooling air outlet openings the top wall and the cover strips deviate to form an obtuse angle open at the top. If the upper plate part is exposed to greater heat during operation, it expands more than the lower plate part. Since both plate parts are connected to one another in the rear section of the grate plate, this results in a relative forward movement of the cover strips relative to the cover wall. The direction of this forward movement can be influenced by the contact surface.
  • this relative movement results in an enlargement of the cooling air outlet openings.
  • this feature results in an increase in the cooling air outlet openings in the case of a higher thermal load on the plate and thus an increased cooling in comparison with the case in the case of a lower thermal load.
  • the depression in the receiving area expediently extends over the entire grate plate width.
  • the longitudinal gap between two adjacent grate plates can be covered by an inlay strip to prevent rust diarrhea.
  • Fig.l is a plan view
  • FIG. 3 Fig. 3
  • Fig. 6 and 7 partial cross-sections through adjacent plates
  • Fig. 8 shows an enlarged detail from Fig. 3.
  • the grate plate consists of a lower plate part 1 (hatch to the top right) and an upper plate part 2 (hatch to the bottom right).
  • the lower plate part 1 forms a cooling air supply opening 21, the edge 3 of which can be placed tightly on the edge of a corresponding opening of a grate plate carrier (not shown).
  • fastening lugs 4 By means of fastening lugs 4, it can be fastened to the grate plate carrier in a known manner.
  • the grate plate protrudes forwardly from the grate plate carrier in order to overlap with its front section and in particular with its front lower edge 5 the sliding surface 6 formed by the rear section of the upper side of the next grate plate.
  • the top of the plate is formed, on the one hand, by the essentially flat rear sliding surface 6, over which the front part of the next rear grate plate pushes back and forth.
  • a cover wall 7 which slopes away obliquely from the back to the front and which is interrupted at two points in the form of a longitudinal opening 8 each.
  • Each longitudinal opening is covered by a cover strip 9, the edges of which form cooling air outlet slots 10 with the edges of the opening, which are covered by part of the cover strip 9 and open horizontally at the top of the cover wall 7.
  • the tops of the cover wall 7 and the cover strips 9 together form the goods receiving surface.
  • the cover strips 9 end in one piece at the front in the front strip 11 of the grate plate. Instead, this end strip could also be exchangeable as a wearing part.
  • the upper edge 12 of the face bar 11 is approximately at the same height as the flat, rear sliding surface 6 of the top of the grate plate. In comparison with the imaginary plane 18 connecting them, the cover wall 7 and the cover strips 9 are lower.
  • the recess (in contrast to the illustration in the drawing) can be delimited by edge strips, which can also be arranged lower than the connection plane 18.
  • the top wall 7 runs in one piece at the front to the front edge of the bottom wall 16.
  • the side edges of the top wall 7 and the bottom wall 16 are connected by walls 15, so that between them and the side walls 15 a cooling air supply space 17 is enclosed, which is connected on the one hand at the rear to the cooling air supply opening 2 and on the other hand to the cooling air outlet slots 10.
  • This reduction in cross section corresponds to the reduction in the quantity of cooling air which has to pass through this space in order to reach the cooling air outlet slots 10.
  • a uniform inflow of the cooling air to the cooling air outlet slots 10 and a correspondingly uniform inflow into the material bed are thereby achieved. Sufficient cooling air also reaches the foremost plate area.
  • Transverse ribs 19 rise from the surface of the top wall 7, which contribute to holding the material located in the recess 13 and preventing relative movement in the longitudinal direction.
  • the recess 13 extends over the entire width of the plate and continues in the adjacent plates, if so these are also trained. There is then also the gap 20 between adjacent plates within the depression (FIG. 6). Insofar as the upper limit of the gap 20 lies within the still good that is held in the depression, the amount of the fine material falling into the gap remains small. This is all the more true since the cooling air flow according to FIG. 3 is directed parallel to the bottom of the depression and therefore there is a high probability that any fine material that gets into the depression will be removed with the cooling air flow before it reaches the plate gap.
  • additional sealing means can also be provided for the plate gap 20, for example the cover strip 22 shown in FIG. 7.
  • the upper boundary of the cooling air outlet slots 10 is formed by the cover strips 9, which belong to the upper plate part and are free of expansion at their front end with respect to the lower plate part.
  • the lower boundary of the cooling air outlet slots 10 is formed by the top wall 7, which belongs to the lower plate part. Due to the inclination of these parts, the lower limit is located further back than the upper one.
  • the cover part 2 of the grate plate takes on a higher temperature during operation and will stretch more than the bottom part 1 of the grate plate. As a result, the upper and front limits of the cooling air outlet gap 10 move more forward than the lower limits, which is equivalent to an enlargement of the cross section of the cooling air outlet slot.
  • the upper grate plate part or the front end of the cover strips 9 is supported on the lower grate plate part via a contact surface 14 which, with the boundary surfaces of the cooling air outlet slot 10, forms an obtuse angle that opens upwards Alpha includes.
  • the surface 14 can run horizontally or parallel to the imaginary plate surface 18.
  • the angular arrangement of the contact surface 14 relative to the gap 10 prevents the gap-limiting surface of the cover strip 9 from touching the front End parallel to the gap delimitation surface of the top wall 7 or even approaches.
  • the greater the thermal load on the grate plate the greater the effect of an increase in the cooling air outlet cross sections with higher heat load on the plate.
  • the thermal bending to which the upper plate part of the grate plate is exposed leads to the same effect.
  • the cover strips 9 assume a higher temperature on their upper side than on their underside. This causes them to bulge up a little. Since they are supported at the front end by the support on the front end of the base part 1 of the grate plate, they bulge away from the lower boundary of the air outlet slots 10.
  • the exemplary embodiment shows a uniform, straight-line lowering of the cover plate 7 and the cover strips 9 from approximately the height of the rear sliding surface 6 to almost the depth of the base plate 16.
  • the cover wall 7 forms a small one at the transition to the rear, upper plate section 6 Level (Fig.3), which has a positive effect on the retention of cool goods.
  • This step can also be omitted, as is the case with the cover strips 9, or can be made stronger.
  • the lowering can also take place in stages instead of continuously.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Baking, Grill, Roasting (AREA)

Abstract

Described is a grating plate for a sliding grating for a burned-material cooling unit, the grating plate having, in the surface which holds the materials, a recess (13) in which cooling-air outlets (10) are located and, below the recess, a cooling-air feed space (17). The depth of the recess (13) increases from back to front. The cross-section of the cooling-air feed space (17) decreases correspondingly from back to front in accordance with the change in the cooling-air flow through the space.

Description

Schubrost für einen Brenngutkühler und Rostplatte dafür Sliding grate for a kiln cooler and grate plate therefor
Bekannte Schubroste, wie sie für die Kühlung von Zementklinker und anderem, schüttbaren Brenngut verwendet werden, bestehen aus einer Mehrzahl von quer zur Längs- und Vorschubrichtung des Kühlers verlaufenden Reihen von Rostplatten, die abwech¬ selnd feststehend und in Förderrichtung hin- und herbewegt an¬ geordnet sind, wobei die hintereinander angeordneten Rostplat¬ ten einander schuppenartig überlappen. Das zu kühlende Gutbett bewegt sich über die Oberseite der Platten und wirkt dabei verschleißend. Es ist bekannt (EP-C 337383; EP-A 537523; US-A 5174747), in der Plattenoberseite in der Gutaufnähmefläche, über die das Gutbett hinweggleitet, Vertiefungen vorzusehen, in denen Gutpartikeln festgehalten werden und in denen Kühl- luftaustrittsöffnungen münden. Diese Anordnung hat den Vor¬ teil, daß das in den Vertiefungen festgehaltene, abgekühlte Gut den darunter befindlichen Bereich der Rostplatte vor der thermischen und verschleißenden Einwirkung des darüber hinweg¬ gleitenden Gutbetts schützt und daß die Kühlluft durch das in den Vertiefungen befindliche Material gut verteilt wird. Da der vordere Plattenabschnitt besonders verschleißgefährdend ist, rüstet man ihn im wesentlichen über seine gesamte Breite mit einer oder mehreren solcher Vertiefungen aus. Hingegen ist der hintere Abschnitt weniger thermisch belastet, weil er in periodisch wechselndem Ausmaß von der dahinter angeordneten Rostplatte überdeckt wird. Damit diese hintere Platte ohne wesentlichen Abstand darüberhinweg gleiten kann, wird die Oberfläche dieses hinteren Abschnitts in der Regel mehr oder weniger glatt und parallel zur Richtung der Relativbewegung ausgebildet. Sie wird im folgenden als Gleitfläche bezeichnet.Known sliding grates, such as those used for cooling cement clinker and other pourable firing material, consist of a plurality of rows of grate plates which run transversely to the longitudinal and feed directions of the cooler and which alternate in a fixed manner and are moved back and forth in the conveying direction are arranged, the grate plates arranged one behind the other overlapping one another in a scale-like manner. The material bed to be cooled moves over the top of the plates and has a wearing effect. It is known (EP-C 337383; EP-A 537523; US-A 5174747) to provide recesses in the top of the plate in the receiving area, over which the bed slides, in which good particles are held and in which cooling air outlet openings open. This arrangement has the advantage that the cooled material held in the recesses protects the area of the grate plate underneath from the thermal and wear-and-tear effect of the material bed sliding over it and that the cooling air is well distributed by the material located in the recesses . Since the front panel section is particularly prone to wear, it is essentially equipped over its entire width with one or more such recesses. On the other hand, the rear section is less thermally stressed because it is covered to a periodically changing extent by the grate plate arranged behind it. So that this rear plate can slide over it without a substantial distance, the surface of this rear section is generally made more or less smooth and parallel to the direction of the relative movement. It is referred to below as the sliding surface.
Die bekannten, im vorderen Abschnitt mit oberseitigen Vertie¬ fungen ausgerüsteten Platten weisen einen Kühlluftzuführungs- rau auf, der mit den Kühlluftaustrittsöffnungen in Verbindung steht und eine Kühlluftzuführungsöffnung besitzt, die mit dem zugehörigen Rostplattenträger verbunden ist. Dies ist ein jeder Reihe zugeordneter Hohlträger, dessen Hohlraum zur Kühlluftzuführung verwendet wird und auf dem die Rostplatten mit ihrem hinteren Bereich nach vorne auskragend montiert sind.The known plates equipped in the front section with recesses on the top side have a cooling air supply rough, which is connected to the cooling air outlet openings and has a cooling air supply opening which is connected to the associated grate plate carrier. This is a hollow beam assigned to each row, the cavity of which is used for supplying cooling air and on which the grate plates are mounted with their rear area projecting forward.
Die Vertiefungen in der Gutaufnahmefläche werden, damit sie einen Teil des Guts um so besser festhalten können, mit steilen Begrenzungsflächen und im Vergleich mit der zur Verfügung stehenden Plattenhöhe möglichst tief ausgebildet. Das bedeutet, daß für den darunter befindlichen Kühlluftzufüh- rungsraum nur eine geringe Querschnittsgröße verbleibt, was zur Folge hat, daß die weiter vorne in der Platte angeordneten Kühlluftaustrittsöffnungen, bei denen der Kühlbedarf besonders groß ist, schlechter mit Kühlluft versorgt werden als die weiter hinten angeordneten. Zwar könnte man den Querschnitt des KühlluftzufUhrungsraums dadurch vergrößern, daß man die Plattenhöhe größer wählt; jedoch wächst dadurch der Material¬ bedarf, der die Kosten bestimmt. Außerdem passen die höheren Platten dann nicht mehr zu bislang gebräuchlichen, weniger hohen Platten.The recesses in the goods receiving area are designed so that they can hold part of the goods all the better, with steep boundary surfaces and as deep as possible in comparison with the available plate height. This means that only a small cross-sectional size remains for the cooling air supply space underneath, which has the consequence that the cooling air outlet openings arranged further in the front of the plate, in which the cooling requirement is particularly large, are supplied with cooling air less well than those arranged further back . The cross section of the cooling air supply space could indeed be increased by choosing a larger plate height; however, this increases the material requirement that determines the costs. In addition, the higher panels then no longer fit the previously used, lower panels.
Der Erfindung liegt daher die Aufgabe zugrunde, einen Schub¬ rost der erläuterten Art, wie er im Gattungsbegriff des Anspruchs 1 angegeben ist, bzw. eine zugehörige Rostplatte hinsichtlich der Luftversorgung der Kühlluftaustrittsöffnungen ohne größeren Kostenaufwand zu verbessern.The invention is therefore based on the object of a sliding grate of the type described, as described in the generic term of Claim 1 is specified, or to improve an associated grate plate with regard to the air supply to the cooling air outlet openings without great expense.
Die erfindungsgemäße Lösung besteht in den kennzeichnenden Merkmalen des Anspruchs 1.The solution according to the invention consists in the characterizing features of claim 1.
Diese Lösung besteht darin, daß die Vertiefung der Gutaufnah¬ mefläche hinten weniger tief als vorne ist, so daß der Kühl- luftzuführungsraum eine entsprechend von hinten nach vorne abnehmende Querschnittsgröße aufweist. Vorteilhafterweise findet die Absenkung der Gutaufnahmefläche von hinten nach vorne allmählich statt. Ferner ist sie zweckmäßigerweise so gestaltet, daß die Querschnittsabnahme des KühlluftzufUhrungs¬ raums etwa der Verminderung der hindurchtretenden Kühlluftmen¬ ge entspricht. Erreicht wird dadurch ein gleichmäßiges Ge¬ schwindigkeitsprofil der Kühlluft innerhalb des KühlluftzufUh¬ rungsraums und eine gleichmäßige Einströmung ins Klinkerbett, zumal wenn die Kühlluftaustrittsöffnungen gleichmäßig über die Länge des entsprechenden Rostplattenabschnitts verteilt sind, vorzugsweise in Form von Längsschlitzen. Infolge des geringe¬ ren Druckabfalls im Kühlluftzuführungsraum werden die weiter vorne liegenden Kühlluftaustrittsöffnungen bzw. Teile der Kühlluftaustrittsschlitze besser mit Kühlluft versorgt, und der vordere, der Wärmeeinwirkung aus dem Gutbett besonders ausgesetzte Teil der Platte wird besser gekühlt.This solution consists in that the depression of the material receiving surface at the back is less deep than at the front, so that the cooling air supply space has a correspondingly decreasing cross-sectional size from the back to the front. Advantageously, the lowering of the receiving area takes place gradually from the back to the front. Furthermore, it is expediently designed in such a way that the decrease in cross-section of the cooling air supply space corresponds approximately to the reduction in the quantity of cooling air passing through. This achieves a uniform speed profile of the cooling air within the cooling air supply space and a uniform inflow into the clinker bed, especially when the cooling air outlet openings are evenly distributed over the length of the corresponding grate plate section, preferably in the form of longitudinal slots. As a result of the lower pressure drop in the cooling air supply space, the cooling air outlet openings or parts of the cooling air outlet slots located further ahead are better supplied with cooling air, and the front part of the plate which is particularly exposed to the action of heat from the material bed is better cooled.
Die allmähliche oder schrittweise Absenkung der Gutaufnahme¬ fläche zur Bildung der oberseitigen Vertiefung in der Rost¬ platte gefährdet die Wirkung, die man mit der Vertiefung erreichen will, nicht. Zwar ist die Dicke der im hinteren, flacheren Bereich der Vertiefung festgehaltenen Gutmenge geringer als im vorderen Bereich, so daß deren Kühleffekt geringer ist, wobei möglicherweise auch ein stärkerer Aus¬ tausch des festgehaltenen Guts stattfindet. Jedoch ist im hinteren Bereich der Vertiefung auch der Kühlbedarf bzw. der Wärmeschutzbedarf der Platte geringer. Dies liegt zum einen daran, daß der hintere Bereich der Vertiefung günstigere Wärmeabfuhrbedingungen zum noch weiter hinten, geschützter gelegenen Abschnitt der Platte aufweist. Zum anderen ist der vordere, stirnnahe Bereich des vorderen Abschnitts der Gutauf¬ nahmefläche der Rostplatte der Verschleiß- und Wärmeeinwirkung vom Gutbett her stärker ausgesetzt.The gradual or gradual lowering of the goods receiving surface to form the upper-side depression in the grate plate does not endanger the effect which the depression is intended to achieve. It is true that the thickness of the quantity of material held in the rear, flatter region of the depression is less than in the front region, so that its cooling effect is less, whereby there may also be a greater exchange of the material held. However, the cooling requirement or the heat protection requirement of the plate is also lower in the rear region of the depression. On the one hand, this is the fact that the rear region of the depression has more favorable heat dissipation conditions to the section of the plate which is located further back and is more protected. On the other hand, the front area of the front portion of the grate plate, close to the forehead, of the grate plate is more exposed to the effects of wear and heat from the material bed.
Die Bezugsfläche, auf die sich die Absenkung der Gutaufnahme¬ fläche bezieht, wird von der gedachten Ebene gebildet, die die Gleitfläche des hinteren Rostplattenabschnitts mit der Ober¬ kante der die Rostplatte vorne begrenzenden Stirnleiste verbindet.The reference surface, to which the lowering of the material receiving surface relates, is formed by the imaginary plane which connects the sliding surface of the rear grate plate section with the upper edge of the front ledge delimiting the grate plate at the front.
Damit die Vertiefung der Gutaufnahmefläche trotz ihrer im hinteren Bereich flacheren Ausführung kühles Gut hinreichend festhalten kann, ist sie zweckmäßigerweise mit einer die Gutbewegung in Längsrichtung relativ zur Rostplatte hindernden Einrichtung versehen, bei der es sich beispielsweise um eine oder mehrere Querrippen handelt.So that the recess of the material receiving surface can hold cool material sufficiently despite its flatter design in the rear area, it is expediently provided with a device which prevents the material movement in the longitudinal direction relative to the grate plate and which is, for example, one or more transverse ribs.
Die Kühlluftaustrittsöffnungen werden zweckmäßigerweise durch Längsschlitze in der den Grund der Vertiefung bildenden Deckwand gebildet, die einschließlich ihrer Ränder von Deck¬ leisten abgedeckt sind. Dadurch münden die Kühlluftaustritt- söffnungen in etwa horizontaler Richtung, was die Möglichkeit zu nachteiligem Gutdurchfall verringert.The cooling air outlet openings are expediently formed by longitudinal slots in the cover wall forming the base of the depression, which are covered by cover strips, including their edges. As a result, the cooling air outlet openings open out in an approximately horizontal direction, which reduces the possibility of disadvantageous material diarrhea.
Nach einem besonderen Merkmal der Erfindung sind die Decklei¬ sten gegenüber der Deckwand in Längsrichtung dehnungsfrei an¬ geordnet, damit die Weite der Austrittsschlitze nicht durch Wärmedehnung verringert werden kann. Die Deckleisten sind zweckmäßigerweise mit dem die Gleitfläche bildenden Teil und ggf. auch mit der Stirnleiste fest, vorzugsweise einstückig verbunden, während die Deckwand ein davon gesondertes Teil bildet, das zweckmäßigerweise mit der den Kühlluftzuführungs- raum unterseitig begrenzenden Bodenwand fest und ggf . ein¬ stückig verbunden ist. Dies hat den Vorteil, daß das Material für die weiter oben gelegenen und deshalb stärker beanspruch¬ ten Teile abweichend von demjenigen der tiefer gelegenen Deck- und Bodenwand gewählt werden kann.According to a special feature of the invention, the cover strips are arranged in the longitudinal direction without stretching relative to the cover wall, so that the width of the outlet slots cannot be reduced by thermal expansion. The cover strips are expediently connected to the part forming the sliding surface and possibly also to the front strip, preferably in one piece, while the cover wall forms a separate part, which is expediently fixed and, if necessary, to the bottom wall delimiting the cooling air supply space on the underside. is connected in one piece. This has the advantage that the material for the parts located further up and therefore subject to greater stress, it can be chosen to deviate from that of the lower-lying top and bottom walls.
Nach einem besonderen Merkmal der Erfindung ist nahe dem vor¬ deren Ende der Deckleisten eine Anlagefläche zwischen dem die Deckleisten umfassenden oberen Plattenteil und dem die Deck¬ wand umfassenden unteren Plattenteil vorgesehen, wobei die Richtung dieser Fläche von der Richtung der die Kühlluftaus¬ trittsöffnungen begrenzenden Flächen der Deckwand und der Deckleisten unter Bildung eines nach oben offenen stumpfen Winkels abweicht. Wenn im Betrieb der obere Plattenteil einer stärkeren Wärmeeinwirkung ausgesetzt ist, dehnt er sich stär¬ ker als der untere Plattenteil. Da beide Plattenteile im hin¬ teren Abschnitt der Rostplatte miteinander verbunden sind, er¬ gibt sich daraus eine relative Vorwärtsbewegung der Decklei¬ sten gegenüber der Deckwand. Die Richtung dieser Vorwärtsbewe¬ gung kann durch die Anlagefläche beeinflußt werden. Wenn deren Winkel gegenüber der Richtung der die Kühlluftaustrittsöffnun¬ gen begrenzenden Flächen im Winkel abweicht, resultiert diese Relativbewegung in einer Vergrößerung der Kühlluftaustritts¬ öffnungen. Mit anderen Worten ergibt dieses Merkmal im Falle einer höheren Wärmebelastung der Platte eine Vergrößerung der Kühlluftaustrittsöffnungen und damit eine verstärkte Kühlung im Vergleich mit dem Fall einer geringeren Wärmebelastung.According to a special feature of the invention, a contact surface is provided near the front end of the cover strips between the upper plate part comprising the cover strips and the lower plate part comprising the cover wall, the direction of this surface being dependent on the direction of the surfaces delimiting the cooling air outlet openings the top wall and the cover strips deviate to form an obtuse angle open at the top. If the upper plate part is exposed to greater heat during operation, it expands more than the lower plate part. Since both plate parts are connected to one another in the rear section of the grate plate, this results in a relative forward movement of the cover strips relative to the cover wall. The direction of this forward movement can be influenced by the contact surface. If their angle differs in angle from the direction of the surfaces delimiting the cooling air outlet openings, this relative movement results in an enlargement of the cooling air outlet openings. In other words, this feature results in an increase in the cooling air outlet openings in the case of a higher thermal load on the plate and thus an increased cooling in comparison with the case in the case of a lower thermal load.
Zweckmäßigerweise erstreckt die Vertiefung in der Gutaufnahme¬ fläche sich über die gesamte Rostplattenbreite. Der Längsspalt zwischen zwei benachbarten Rostplatten kann zur Vermeidung von Rostdurchfall durch eine Einlegeleiste abgedeckt sein.The depression in the receiving area expediently extends over the entire grate plate width. The longitudinal gap between two adjacent grate plates can be covered by an inlay strip to prevent rust diarrhea.
Die Erfindung wird im folgenden näher unter Bezugnahme auf die Zeichnung erläutert, die ein vorteilhaftes Ausführungsbeispiel veranschaulicht. Darin zeigen:The invention is explained in more detail below with reference to the drawing, which illustrates an advantageous embodiment. In it show:
Fig.l eine Draufsicht,Fig.l is a plan view
Fig.2 und 3 Längsschnitte gemäß den Linien II und III der Fig.l, Fig.4 und 5 Querschnitte gemäß den Linien IV und V der2 and 3 longitudinal sections according to lines II and III of Fig.l, 4 and 5 cross sections along lines IV and V of
Fig.3, Fig.6 und 7 Teilquerschnitte durch benachbarte Platten und Fig.8 ein aus Fig.3 vergrößert dargestelltes Detail.Fig. 3, Fig. 6 and 7 partial cross-sections through adjacent plates and Fig. 8 shows an enlarged detail from Fig. 3.
Die Rostplatte besteht aus einem unteren Plattenteil 1 (Schraf- fur nach rechts oben) und einem oberen Plattenteil 2 (Schraf- fur nach rechts unten). In dem in Fig.l bis 3 links darge¬ stellten hinteren Abschnitt der Platte bildet der untere Plat¬ tenteil 1 eine Kühlluftzufuhröffnung 21, deren Rand 3 auf den Rand einer entsprechenden Öffnung eines nicht dargestellten Rostplattenträgers dicht aufsetzbar ist. Mittels Befestigungs¬ nasen 4 kann sie an dem Rostplattenträger in bekannter Weise befestigt werden. Von dem Rostplattenträger kragt die Rost¬ platte nach vorne aus, um mit ihrem vorderen Abschnitt und insbesondere mit ihrer vorderen Unterkante 5 die von dem hinteren Abschnitt der Oberseite der nächstfolgenden Rostplat¬ te gebildete Gleitfläche 6 zu übergreifen.The grate plate consists of a lower plate part 1 (hatch to the top right) and an upper plate part 2 (hatch to the bottom right). In the rear section of the plate shown on the left in FIGS. 1 to 3, the lower plate part 1 forms a cooling air supply opening 21, the edge 3 of which can be placed tightly on the edge of a corresponding opening of a grate plate carrier (not shown). By means of fastening lugs 4, it can be fastened to the grate plate carrier in a known manner. The grate plate protrudes forwardly from the grate plate carrier in order to overlap with its front section and in particular with its front lower edge 5 the sliding surface 6 formed by the rear section of the upper side of the next grate plate.
Die Oberseite der Platte wird zum einen von der im wesentli¬ chen ebenen hinteren Gleitfläche 6 gebildet, über welcher sich der vordere Teil der nächsthinteren Rostplatte vor- und zu¬ rückschiebt. Im vorderen Abschnitt der Platte wird ihre Ober¬ seite gebildet von einer von hinten nach vorne schräg abfal¬ lenden Deckwand 7, die an zwei Stellen in Form je einer Längs¬ öffnung 8 unterbrochen ist. Jede Längsöffnung wird von einer Deckleiste 9 abgedeckt, deren Ränder mit den Rändern der Öffnung Kühlluftaustrittsschlitze 10 bilden, die von einem Teil der Deckleiste 9 überdeckt sind und horizontal in Höhe der Oberseite der Deckwand 7 münden. Die Oberseiten der Deck¬ wand 7 und der Deckleisten 9 bilden gemeinsam die Gutaufnahme¬ fläche.The top of the plate is formed, on the one hand, by the essentially flat rear sliding surface 6, over which the front part of the next rear grate plate pushes back and forth. In the front section of the plate, its upper side is formed by a cover wall 7 which slopes away obliquely from the back to the front and which is interrupted at two points in the form of a longitudinal opening 8 each. Each longitudinal opening is covered by a cover strip 9, the edges of which form cooling air outlet slots 10 with the edges of the opening, which are covered by part of the cover strip 9 and open horizontally at the top of the cover wall 7. The tops of the cover wall 7 and the cover strips 9 together form the goods receiving surface.
Die Deckleisten 9 enden vorne einstückig in der Stirnleiste 11 der Rostplatte. Statt dessen könnte diese Stirnleiste aber auch als Verschleißteil auswechselbar sein. Die Oberkante 12 der Stirnleiste 11 liegt etwa in derselben Höhe wie die ebene, hintere Gleitfläche 6 der Rostplattenoberseite. Im Vergleich mit der sie verbindenen gedachten Ebene 18 liegen die Deckwand 7 und die Deckleisten 9 tiefer.The cover strips 9 end in one piece at the front in the front strip 11 of the grate plate. Instead, this end strip could also be exchangeable as a wearing part. The upper edge 12 of the face bar 11 is approximately at the same height as the flat, rear sliding surface 6 of the top of the grate plate. In comparison with the imaginary plane 18 connecting them, the cover wall 7 and the cover strips 9 are lower.
Sie bilden gemeinsam den Grund der Vertiefung 13, die quer durchgehend zwischen der Stirnleiste 11 und der hinteren Gleitfläche 6 gebildet ist. Seitlich kann die Vertiefung (abweichend von der Darstellung in der Zeichnung) durch Randleisten begrenzt sein, die ebenfalls gegenüber der Verbin¬ dungsebene 18 tiefer angeordnet sein können.Together, they form the base of the depression 13, which is formed transversely continuously between the front ledge 11 and the rear sliding surface 6. Laterally, the recess (in contrast to the illustration in the drawing) can be delimited by edge strips, which can also be arranged lower than the connection plane 18.
Die Deckwand 7 läuft vorne einstückig zum vorderen Rand der Bodenwand 16 aus. Die Seitenränder der Deckwand 7 und der Bodenwand 16 sind durch Wände 15 verbunden, so daß zwischen ihnen und den Seitenwänden 15 ein Kühlluftzuführungsraum 17 eingeschlossen ist, der einerseits hinten mit der Kühlluftzu- führungsöffnung 2 und andererseits mit den Kühlluftaustritts- schlitzen 10 verbunden ist. Dadurch, daß sich die Deckwand 7 und die Deckleisten 9 gleichmäßig von etwa der Höhe des hinteren oberseitigen Abschnitts 6 nach vorne hin absenken, vermindert sich der Querschnitt des KühlluftzufUhrungsraums 17 von hinten nach vorne entsprechend gleichmäßig. Diese Quer¬ schnittsverminderung entspricht der Verminderung der Kühlluft¬ menge, die durch diesen Raum hindurchtreten muß, um die Kühlluftaustrittsschlitze 10 zu erreichen. Es wird dadurch eine gleichmäßige Zuströmung der Kühlluft zu den Kühlluftaus- trittsschlitzen 10 und eine entsprechend gleichmäßige Einströ¬ mung in das Gutbett erreicht. Auch der vorderste Plattenbe¬ reich wird ausreichend von Kühlluft erreicht.The top wall 7 runs in one piece at the front to the front edge of the bottom wall 16. The side edges of the top wall 7 and the bottom wall 16 are connected by walls 15, so that between them and the side walls 15 a cooling air supply space 17 is enclosed, which is connected on the one hand at the rear to the cooling air supply opening 2 and on the other hand to the cooling air outlet slots 10. Characterized in that the top wall 7 and the cover strips 9 evenly lower towards the front from about the height of the rear upper section 6, the cross section of the cooling air supply space 17 decreases correspondingly evenly from the rear to the front. This reduction in cross section corresponds to the reduction in the quantity of cooling air which has to pass through this space in order to reach the cooling air outlet slots 10. A uniform inflow of the cooling air to the cooling air outlet slots 10 and a correspondingly uniform inflow into the material bed are thereby achieved. Sufficient cooling air also reaches the foremost plate area.
Von der Oberfläche der Deckwand 7 erheben sich Querrippen 19, die dazu beitragen, das in der Vertiefung 13 befindliche Gut festzuhalten und an Relativbewegung in Längsrichtung zu hin¬ dern.Transverse ribs 19 rise from the surface of the top wall 7, which contribute to holding the material located in the recess 13 and preventing relative movement in the longitudinal direction.
Die Vertiefung 13 erstreckt sich über die gesamte Breite der Platte und setzt sich in den benachbarten Platten fort, sofern diese ebenso ausgebildet sind. Es liegt dann auch der Spalt 20 zwischen benachbarten Platten innerhalb der Vertiefung (Fig.6). Soweit die obere Begrenzung des Spalts 20 innerhalb des ruhigen Guts liegt, das in der Vertiefung festgehalten wird, bleibt die Menge des in den Spalt hineinfallenden Fein¬ guts gering. Dies gilt um so mehr, als der Kühlluftstrom gemäß Fig.3 parallel zum Grund der Vertiefung gerichtet ist und da¬ her die Wahrscheinlichkeit groß ist, daß etwa in die Ver¬ tiefung gelangendes Feingut mit dem Kühlluftstrom entfernt wird, bevor es den Plattenspalt erreicht. Es können aber auch zusätzliche Dichtungsmittel für den Plattenspalt 20 vorgesehen sein, beispielsweise die in Fig.7 dargestellte Abdeckleiste 22.The recess 13 extends over the entire width of the plate and continues in the adjacent plates, if so these are also trained. There is then also the gap 20 between adjacent plates within the depression (FIG. 6). Insofar as the upper limit of the gap 20 lies within the still good that is held in the depression, the amount of the fine material falling into the gap remains small. This is all the more true since the cooling air flow according to FIG. 3 is directed parallel to the bottom of the depression and therefore there is a high probability that any fine material that gets into the depression will be removed with the cooling air flow before it reaches the plate gap. However, additional sealing means can also be provided for the plate gap 20, for example the cover strip 22 shown in FIG. 7.
Die obere Begrenzung der Kühlluftaustrittsschlitze 10 wird durch die Deckleisten 9 gebildet, die zum oberen Plattenteil gehören und an ihrem vorderen Ende gegenüber dem unteren Plattenteil dehnungsfrei sind. Die untere Begrenzung der Kühlluftaustrittsschlitze 10 wird durch die Deckwand 7 gebil¬ det, die zum unteren Plattenteil gehört. Infolge der Schrägung dieser Teile ist die untere Begrenzung weiter hinten als die obere angeordnet. Der Deckteil 2 der Rostplatte nimmt im Betrieb eine höhere Temperatur an und wird sich stärker dehnen als der Bodenteil 1 der Rostplatte. Das führt dazu, daß die obere und vordere Begrenzung des Kühlluftaustrittsspalts 10 sich stärker nach vorne verschiebt als die untere Begrenzung, was einer Vergrößerung des Querschnitts des Kühlluftaustritts- schlitzes gleichkommt. In diesem Zusammenhang kann es vorteil¬ haft sein, wenn der obere Rostplattenteil bzw. das vordere Ende der Deckleisten 9 sich an dem unteren Rostplattenteil über eine Anlagefläche 14 abstützt, die mit den Begrenzungs¬ flächen des Kühlluftaustrittsschlitzes 10 einen sich nach oben öffnenden, stumpfen Winkel Alpha einschließt. Beispielsweise kann die Fläche 14 horizontal bzw. parallel zur gedachten Plattenoberfläche 18 verlaufen. Durch die zu dem Spalt 10 winklige Anordnung der Anlagefläche 14 wird verhindert, daß sich die Spaltbegrenzungsfläche der Deckleiste 9 am vorderen Ende parallel zu der Spaltbegrenzungsfläche der Deckwand 7 verschiebt oder sich dieser gar nähert. Der Effekt einer Vergrößerung der Kühlluftaustrittsquerschnitte bei höherer Wärmebelastung der Platte ist um so stärker, je stärker die Wärmebelastung der Rostplatte ist. Zu demselben Effekt führt die thermische Biegung, der der obere Plattenteil der Rost¬ platte ausgesetzt ist. Die Deckleisten 9 nehmen auf ihrer Oberseite eine höhere Temperatur an als auf ihrer Unterseite. Dies führt dazu, daß sie sich ein wenig nach oben wölben. Da sie am vorderen Ende durch die Auflage auf dem vorderen Ende des Bodenteils 1 der Rostplatte abgestützt sind, wölben sie sich von der unteren Begrenzung der Luftaustrittsschlitze 10 weg.The upper boundary of the cooling air outlet slots 10 is formed by the cover strips 9, which belong to the upper plate part and are free of expansion at their front end with respect to the lower plate part. The lower boundary of the cooling air outlet slots 10 is formed by the top wall 7, which belongs to the lower plate part. Due to the inclination of these parts, the lower limit is located further back than the upper one. The cover part 2 of the grate plate takes on a higher temperature during operation and will stretch more than the bottom part 1 of the grate plate. As a result, the upper and front limits of the cooling air outlet gap 10 move more forward than the lower limits, which is equivalent to an enlargement of the cross section of the cooling air outlet slot. In this context, it may be advantageous if the upper grate plate part or the front end of the cover strips 9 is supported on the lower grate plate part via a contact surface 14 which, with the boundary surfaces of the cooling air outlet slot 10, forms an obtuse angle that opens upwards Alpha includes. For example, the surface 14 can run horizontally or parallel to the imaginary plate surface 18. The angular arrangement of the contact surface 14 relative to the gap 10 prevents the gap-limiting surface of the cover strip 9 from touching the front End parallel to the gap delimitation surface of the top wall 7 or even approaches. The greater the thermal load on the grate plate, the greater the effect of an increase in the cooling air outlet cross sections with higher heat load on the plate. The thermal bending to which the upper plate part of the grate plate is exposed leads to the same effect. The cover strips 9 assume a higher temperature on their upper side than on their underside. This causes them to bulge up a little. Since they are supported at the front end by the support on the front end of the base part 1 of the grate plate, they bulge away from the lower boundary of the air outlet slots 10.
Das Ausführungsbeispiel zeigt eine gleichmäßige, geradlinige Absenkung der Deckplatte 7 und der Deckleisten 9 etwa von der Höhe der hinteren Gleitfläche 6 bis fast zur Tiefe der Boden¬ platte 16. Dabei bildet die Deckwand 7 am Übergang zum hinte¬ ren, oberen Plattenabschnitt 6 eine kleine Stufe (Fig.3), die sich günstig auf das Festhalten kühlen Guts auswirkt. Diese Stufe kann auch wegfallen, wie dies bei den Deckleisten 9 der Fall ist, oder stärker ausgebildet sein. Die Absenkung kann sich auch stufig in mehreren Schritten statt kontinuierlich vollziehen. The exemplary embodiment shows a uniform, straight-line lowering of the cover plate 7 and the cover strips 9 from approximately the height of the rear sliding surface 6 to almost the depth of the base plate 16. The cover wall 7 forms a small one at the transition to the rear, upper plate section 6 Level (Fig.3), which has a positive effect on the retention of cool goods. This step can also be omitted, as is the case with the cover strips 9, or can be made stronger. The lowering can also take place in stages instead of continuously.

Claims

Patentansprüche claims
1. Schubrost für einen Kühler für Brenngut wie Zementklinker mit wenigstens einer Rostplatte, deren Oberseite im hinte¬ ren Abschnitt eine mit in Rostlängsrichtung dahinter angeordneten, überdeckenden Platte zusammenwirkende Gleit¬ fläche (6) und im vorderen Abschnitt eine Gutaufnahmeflä¬ che bildet, die zumindest teilweise als Vertiefung (13) im Verhältnis zu der Gleitfläche (6) und der Oberkante (12) einer sie vorne begrenzenden Stirnleiste gebildet ist und in der Kühlluftaustrittsöffnungen (10) münden, die von einem Kühlluftzuführungsraum (17) ausgehen, der sich zwi¬ schen einer an der Bildung der Gutaufnähmefläche beteilig¬ ten Deckwand (7) und einer unterseitigen Bodenwand (16) befindet, die im hinteren Abschnitt der Rostplatte eine Kühlluftzuführungsöffnung (21) aufweist, dadurch gekenn¬ zeichnet, daß die Tiefe der Vertiefung (13) von hinten nach vorne zunimmt und der Kühlluftzuführungsraum (17) eine von hinten nach vorne abnehmende Querschnittsgröße aufweist.1. Sliding grate for a cooler for fired goods such as cement clinker with at least one grate plate, the top of which forms in the rear section a sliding surface (6) which cooperates with a covering plate arranged behind it in the longitudinal direction of the grate and in the front section forms a good receiving surface which at least partially formed as a depression (13) in relation to the sliding surface (6) and the upper edge (12) of a front ledge bordering them and opening into the cooling air outlet openings (10) which emanate from a cooling air supply space (17) which is between one in the formation of the Gutaufnähmefäch¬ th wall (7) and a bottom wall (16) is located, which has a cooling air supply opening (21) in the rear portion of the grate plate, characterized in that the depth of the recess (13) from behind increases towards the front and the cooling air supply space (17) has a cross-sectional size that decreases from the rear to the front having.
2. Schubrost nach Anspruch 1, dadurch gekennzeichnet, daß die Absenkung der Gutaufnahmefläche von hinten nach vorne all¬ mählich stattfindet.2. Sliding grate according to claim 1, characterized in that the lowering of the receiving surface takes place gradually from the back to the front.
3. Schubrost nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Vertiefung (13) wenigstens eine die Gutbewegung in Längsrichtung relativ zur Rostplatte hindernde Einrichtung (19) enthält.3. Sliding grate according to claim 1 or 2, characterized in that the recess (13) contains at least one device (19) preventing the material movement in the longitudinal direction relative to the grate plate.
4. Schubrost nach Anspruch 3 dadurch gekennzeichnet, daß die Einrichtung als Querrippe (19) ausgebildet ist. 4. Sliding grate according to claim 3, characterized in that the device is designed as a transverse rib (19).
5. Schubrost nach einem der Ansprüche 1 bis 4, dadurch ge¬ kennzeichnet, daß die Deckwand (7) in der Vertiefung (13) Längsschlitze (8) zur Bildung der Kühlluftaustrittsöffnun¬ gen (10) enthält, die einschließlich ihrer Ränder von Deckleisten (9) abgedeckt sind.5. Sliding grate according to one of claims 1 to 4, characterized ge indicates that the top wall (7) in the recess (13) contains longitudinal slots (8) to form the cooling air outlet openings (10), including their edges of cover strips ( 9) are covered.
6. Schubrost nach Anspruch 5, dadurch gekennzeichnet, daß die Deckleisten (9) gegenüber der Deckwand (7) in Längsrich¬ tung dehnungsfrei angeordnet sind.6. Sliding grate according to claim 5, characterized in that the cover strips (9) with respect to the cover wall (7) are arranged in the longitudinal direction without stretching.
7. Schubrost nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Deckleisten (9) mit dem die Gleitfläche (6) bil¬ denden Teil der Rostplatte fest verbunden sind.7. sliding grate according to claim 5 or 6, characterized in that the cover strips (9) with the the sliding surface (6) bil¬ forming part of the grate plate are firmly connected.
8. Schubrost nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß auch die Stirnleiste (11) mit den Deckleisten (9) fest verbunden ist.8. Sliding grate according to claim 6 or 7, characterized in that the front strip (11) with the cover strips (9) is fixedly connected.
9. Schubrost nach einem der Ansprüche 6 bis 8, dadurch ge¬ kennzeichnet, daß die Deckwand (7) mit der Bodenwand (16) fest verbunden ist.9. sliding grate according to one of claims 6 to 8, characterized ge indicates that the top wall (7) with the bottom wall (16) is fixedly connected.
10. Schubrost nach einem der Ansprüche 6 bis 9, dadurch ge¬ kennzeichnet, daß nahe dem vorderen Ende der Deckleisten (9) eine Anlagegleitfläche (14) zwischen dem die Decklei¬ sten umfassenden oberen Plattenteil (2) und dem die Deck¬ wand (7) umfassenden unteren Plattenteil (1) vorgesehen ist, deren Richtung von der Richtung der die Kühlluftaus¬ trittsöffnungen (10) begrenzenden Flächen der Deckwand (7) und der Deckleisten (9) unter Bildung eines nach oben offenen, stumpfen Winkels (α) abweicht.10. Sliding grate according to one of claims 6 to 9, characterized in that near the front end of the cover strips (9) has a contact sliding surface (14) between the cover plate-comprising the upper plate part (2) and the cover wall ( 7) comprising the lower plate part (1) is provided, the direction of which deviates from the direction of the surfaces of the cover wall (7) and the cover strips (9) delimiting the cooling air outlet openings (10), forming an obtuse angle (α) which is open at the top .
11. Schubrost nach einem der Ansprüche 1 bis 10, dadurch ge¬ kennzeichnet, daß die Vertiefung (13) der Gutaufnahme¬ fläche sich über die gesamte Rostplattenbreite erstreckt. 11. Sliding grate according to one of claims 1 to 10, characterized ge indicates that the recess (13) of the Gutnahm¬ surface extends over the entire grate plate width.
12. Schubrost nach einem der Ansprüche 1 bis 11, dadurch ge¬ kennzeichnet, daß der Längsspalt (20) zwischen zwei be¬ nachbarten Rostplatten durch eine Einlegeleiste (22) ab¬ gedeckt ist.12. Sliding grate according to one of claims 1 to 11, characterized in that the longitudinal gap (20) between two adjacent grate plates is covered by an insert strip (22).
13. Rostplatte mit den Merkmalen eines der Ansprüche 1 bis 12 13. grate plate with the features of one of claims 1 to 12
EP95936572A 1994-10-31 1995-10-30 Sliding grating for a burned-material cooling unit, and grating plate for such a grating Expired - Lifetime EP0789830B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9417515U 1994-10-31
DE9417515U DE9417515U1 (en) 1994-10-31 1994-10-31 Sliding grate for clinker coolers
PCT/EP1995/004259 WO1996013692A1 (en) 1994-10-31 1995-10-30 Sliding grating for a burned-material cooling unit, and grating plate for such a grating

Publications (2)

Publication Number Publication Date
EP0789830A1 true EP0789830A1 (en) 1997-08-20
EP0789830B1 EP0789830B1 (en) 1999-03-10

Family

ID=6915561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95936572A Expired - Lifetime EP0789830B1 (en) 1994-10-31 1995-10-30 Sliding grating for a burned-material cooling unit, and grating plate for such a grating

Country Status (7)

Country Link
US (1) US5882189A (en)
EP (1) EP0789830B1 (en)
JP (1) JP3656098B2 (en)
DE (2) DE9417515U1 (en)
DK (1) DK0789830T3 (en)
ES (1) ES2129861T3 (en)
WO (1) WO1996013692A1 (en)

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EP0987494A1 (en) * 1998-09-15 2000-03-22 Asea Brown Boveri AG Process for cooling a grate of a furnace and grate of a furnace
AUPR229100A0 (en) * 2000-12-22 2001-01-25 Renewable Energy Corporation Limited Grate structure for solid fuel burners
DE102007019530C5 (en) * 2007-04-25 2018-01-04 Alite Gmbh Method and device for cooling a bulk material layer lying on a conveyor grate
US7921786B2 (en) * 2007-05-10 2011-04-12 Riley Power Inc. Grating system and sidewall seal arrangement for oscillating grate stoker
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Also Published As

Publication number Publication date
US5882189A (en) 1999-03-16
WO1996013692A1 (en) 1996-05-09
JP3656098B2 (en) 2005-06-02
DE9417515U1 (en) 1996-02-29
DE59505321D1 (en) 1999-04-15
ES2129861T3 (en) 1999-06-16
EP0789830B1 (en) 1999-03-10
JPH10508088A (en) 1998-08-04
DK0789830T3 (en) 2000-06-05

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